Stripping machine



Aug. 16, 1932. E, L, PATTEN 1,872,327

STRIPPING MACHINE Filed Oct. 22, 1930 2 Sheets-Sheet l INVENTOR ERNEST L. PATTEN BY I A'IT N Y 1932- E. L. PATTEN, 1,872,327

STRIPPING MACHINE Filed Oct. 22, 1930 2 Sheets-Sheet 2 m INVENTOR ERNEST L. PAT

Patented Aug. 16, 1932 PATENT OFFICE ERNEST Ir. IPATTEN, OF HAVEN, CONNECTICUT, ASSIGNOR TO THE GOODYEARS INDIA RUBBERGLO'VE MFG. C0.,=OF NAUGATUCK, N EW. HAMPSHIRE, A CORPORATION LOF-CONNECTIGUT s'rnxrrme MACHINE Application filed oetolier 22,1930. Serial No. 490,377.

core-is employed on which the hollow rubber article is built, as by 'molding or depositing thesolid contentsof latex thereonand after the-manufacturing operation is completed, the hollow articles, such as water bottles, are

' stripped from the core, In certain classes of hollow rubber articles, such. as water bottles,

.the-neckormouth of the bottle is considerably smaller than the body of the bottle, and therefore, smallerthan the body of the core,

' T and a great-deal. of. trouble has been encounteredin the past inthe stripping operation. This stripping .operationhas invariably-been done by hand,/.the. operator beingprovided with two hook members which .if :are inserted into the neck of the bottle and then the operator by alateral motion stretches the neckto the size ofthe mold and with a downward motion stripsthe bottle there- -from. This operation requires considerable strength and whenrepeated at .frequent intervals and throughout a day is a particularly arduous task, and is. extremely tiring evento an operator who has more than ordi- --narystren-gth. V *With aview to obviating the objections above noted and to increase the. working capacity. of, the operatorcby decreasing the fatigue due to manually strippingithebottles from the cores, 1 havedevised thejsu-bject- -matterof the present invention. The present invention efficiently and mechanically ,performs the stripping operation which hasheretoforebeen done by hand,and' in carrying out w -my invention, I provide a supportfor the bottle core or mold, wherebythe core is held in fixed position and has arranged thereon stripping hookson either side of the core, such: stripping hooks. being mechanically moved upwardlyanddownwardly and in a fixed path to provide-the necessary and pre- *liminary lateral movement tostretch the neck -of-the bottle to a size greater than the size of -the core and thus to. facilitate the :0f-the article. from the core;

of the machine shown in Fig. 1, and showing F ig- 6 is a detailed section of the upper end .constantly urging the clutch member 20 to -,the right as shown in Fig. 250 as to bring such clutch member 20 into engagement with removal v V encircles the clutch member 20, and one face 100 An object of the invention, therefore, is an improved mechanical water bottle stripping device.- p Other objects and novel features of the constructionand arrangement of parts comprising the structure will appear as a description of the invention progresses. In the accompanying drawings illustrating a preferred embodiment of my invention F ignre 1 is afront elevation;

F ig. 2 is a side elevation;

Fig. .3 isa detail view of one of the stripping hooks taken on the line 33 of Fig. 1;

Fig. 4 is a front elevation of the upper part the stripping hooks in the act of stripping a water bottle from a core; y

Fig. 5 is an enlarged plan view of the clutch dog and;

of one of the cam members with the hookholding device in position therein.

Referring to the drawings, lOdesignates a .base that has secured to its upper face by .bolts 11 an upwardly extending standard 12.

.75 Also secured to the base 10 by bolts 13 is a speed-reduction gear 14. The driving shaft 15 of the speed reduction gear 14 is in align- -ment with a drive shaft 16 rotatably mounted in a bearing 17 formed in the standard. 12.

rotatable with respect to and slidably mountedon the shaft 16. A spring 21 surrounds ..the shaft 16 and is located between thebearing 17 and clutch member. 20; this spring which is pivotally mounted a clutch lever 25.

The ,free end of this clutch lever partially of this free end is beveled as indicated at 26 for the purpose of engaging the pin 22 and controlling the movement of the clutch member 20. Adjacent the beveled face 26 is attached one end of a spring 27, the other end of this spring being attached to a member 28 secured to the upright 18 by bolts 29. The spring 27, therefore, always tends tohold the free end of the clutch lever 25 in engagement with the clutch member 20. Pivotally attached to the free end of the clutch lever 25 is a link 30, and the lower end of this link is pivotally attached to the outer or free end of an arm 31. The arm 31 is secured to a shaft 32, rotatably mounted in suitable bearings formed in the upright 12. Secured to one end of the shaft 32 is a lever 33, the free end of such lever being bifurcated as indicated at 34 and in this bifurcated end works the free end of a lever 34 secured to a hub 36- that in turn is rotatably mounted on a shaft 37 attached to the base 10'. Also attached to the hub 36 is a treadle 38 and by means of which the shaft 32 may be rotated.

In the position in which the elements just described are shown in the drawings, the pin 22 on the clutch member 20 is in the position where the clutch member 20 is in its extreme left-hand position as shown in Fig. 2, and therefore, out of engagement with the clutch member 19. If the operator, however, depresses the treadle 38 through the lever 35, lever 34 and lever 31, a downward pull is exerted on the connecting rod 30 against the tension of the spring 27 and the beveled free end of the clutch lever 25 is moved downwardly from the position shown inFig. 1 until the beveled face 26 is moved out of engagement with the pin 32. "When this occurs, the resiliency of spring 21 forces the clutch member 20 to the right as shown in Fig. 2, bringing the same into engagement with clutch member 19 and, therefore, rotary movement is imparted to the shaft 15 from the shaft 16 of the speed reduction gear 14. The shaft 15 rotates through a single revolution or until the pin 22 engages with the beveled face 26 and again moves the clutch member 20 out of engagement with the clutch member 19.

Secured to the base 10 by bolts 39 is a' motor 40, the drive shaft 31 of which is connected with the drive shaft 42 of the speed reduction gear 14 by a coupling 43. The mo tor 40 is connected with a source of power (not shown) through the usual conductors terminating in a switch box 44, from which the power is controlled by switch buttons or levers 45 to open or close a circuit from the conductors referred to, to the conductors 46, located within the conduit 47.

Formed in the standard 12 is a vertical slide 48 in which is slidably mounted a cross head 49. Pivotally attached to the cross head is one end of the connecting rod 50, this connecting rod being pivotally attached to the crank disk 18. It is obvious, therefore, that rotary motion of the shaft 16 will cause reciprocatory motion of the cross head 49, and also it is obvious that because of the presence of the one-revolution clutch above described and assuming the elements above described to be in the position shown in Fig. 1 that thecross-head 49 will be moved from the position shown in Fig. l to its lowermost position and back again to the position shown in Fig. 1.

Formed integral with the standard 12 and on either side thereof are outward extending arms 52. As will be obvious from inspection of Fig. 1, such arms 52 are arranged in pairs and on each pair on each side of the standard 12 are secured, by screws 53, a vertically arranged member 54 in which is formed a cam race 55. Slidably mounted in each of the cam races 55 is a shaft 56, a non-friction bushing 57 being mounted on the shaft 56 and engaging directly with the cam race 55. On the shaft 56 is arranged a collar 58 that engages with one face of the member 54 and on the shaft 56 and engaging with the other face of the member 54 is a collar 59 that is formed integral with aconnecting rod 60. A nut 61 on the shaft 56 holds the connecting rod on the shaft .56 and maintains the collars 58 and 59 in engagement with the faces of the member 54.

The connecting rod 60 extends downwardly and its lower end is pivotally mounted to the outer end of an arm 62 formed integral with the cross head 49. Formed integral with the shaft 56' on the end remote from the nut 61 is a portion 63 and this portion 63 is adapted to act as a shaft for a hook bearing 64 formed at the inner end of the operating handle 65. Also formed integral with the handle 65 and extending upward therefrom is a hook member 66, the upper end of which is bent as shown in 67 and this bent end 67 is concave as indicated at 68 to correspond with the contour of the edge of the core.

The extreme upper end of the standard 12 extends at a right angle to the main portion and has formed thereon a vertically arranged plate 69. Extending outwardly from the face of the plate 69 are studs 70 adapted to be engaged by corresponding holes in the upper part of a bottle core 71 and this arrangement provides a means of suspending the core 71 in operative relation to the hook members 66.

It is understood, of course, that the bottle 72 is formed on the core 71 in any usual manner, as by molding or depositing the solid contents of latex, and also that the neck 73 of the core and, therefore, of the bottle 72 is considerably smaller than the body portion of th core. The shape of the cam 55 is such as to impart a lateral movement to the shaft 63, as the cross head 49 starts downward from its position shown in Fig. 1, and there fore, will obviously impart a like lateral movement to the hook members 66 and particularly to the bent portion 67 thereof. Assuming that the bottle 72 of rubber or like resilient material has been formed on the core 71 in the usual manner, and that it is desired to remove such bottle from the core 71, the parts being in the position shown in Fig. 1, the operator turns the handles 65 so as to bring the hook portions 67 of the hooks 66 within the mouth of the bottle 72 and then stepping on the treadle 38 will cause the one-revolution clutch device, above described, to operate and the cross head 49 starts downward from the position shown in Fig. 1. As above described, this preliminary stretching movement causes a lateral movement of the shafts 63 and therefore a lateral movement of the hook members 66, thus stretching the mouth or neck of the bottle 72, so as to allow the same to be passed over the body of the core 71. The parts will not be in the position shown in Fig. 4:, and a continuation of this movement strips the bottle 7 2 completely from the core 71, whereupon the cross head 49 is again moved upwardly and into the position shown in Fig. 11.

This cycle of operation may be repeated indefinitely and it is also obvious that the entire operation is mechanically performed and entails no physical exertion on the part of the operator.

Having thus described my invention, what I claim and desire to protect by Letters Patent is:

1. In a stripping machine of the kind described, the combination of a core holder, a stripping hook adapted to engage in the neck of an article of resilient material formed on the core, a cam associated with the stripping hook and arranged parallel to the length of the core and means for moving the stripping hook longitudinally of the cam to impart thereto a lateral movement to distend the neck of the article to facilitate removal thereof from the core.

2. In a stripping machine of the kind described, the combination of a core holder, a stripping hook adapted to engage in the neck of an article of resilient material formed on the core, a cam associated with the stripping hook and arranged parallel to the length of the core and means to impart to the stripping hook a simultaneous lateral and longitudinal movement with respect to the core to strip the article from the core. 7

3. In a stripping machine of the kind described the combination of a core holder, a stripping hook arranged parallel to and on each side thereof said stripping hooks adapt ed to engage within the neck of an article of resilient material formed on the core, and means for imparting a simultaneous lateral and longitudinal motion to the stripping hooks to distend the neck of the article and strip the same from the core.

4. In a stripping machine of the kind described, the combination of a standard, a core holder thereon, a slideway formed in said standard, a cross-head slidably mounted in said slideway, a cam located on each side of the slideway, a stripping hook associated with each of the cams, said stripping hooks adapted to engage within the neck of an article formed on a core supported on the core holder connections between the cross-head and the stripping hooks and means for moving said cross-head to impart a simultaneous lateral and longitudinal movement with respect to the core, to distend the neck of the article and strip the same from the core.

5. In a stripping machine, the combination of a core holder, a cross-head, cams, stripping hooks operatively associated with the cams and adapted to engage in the neck of an article of resilient material formedon the core, connections between the cross-head and stripping hooks, and means for reciprocating the crosshead to cause the stripping hooks to strip the article of resilient material from the core.

6. In a stripping machine, the combination of a standard, a drive shaft rotatably mounted therein, a cross head, a cam fixed to the standard, a stripping hook operatively associated with the cam and adapted to engage in the neck of an article of resilient material formed on the core, connections between the cross-head and stripping hook, and means for causing a single rotation of the drive shaft to move the cross-head toward and from the core holder and a simultaneous lateral and longitudinal movement of the stripping hooks with respect to the core, to cause the stripping hook to strip the article of resilient material from the core.

7 In a stripping machine, the combination of a standard, a drive shaft rotatably mounted therein, a core holder, a cross-head, cams fixed to the standard on either end of the cross head, stripping hooks operatively associated with the cams and adapted to engage in the neck of an article of resilient material formed on the core, connections between the cross-head and stripping hooks, and a onerevolution clutch between the source of power and the drive shaft for causing a single rotation of the drive shaft to move the cross-head toward and from the core holder and a simultaneous lateral and longitudinal movement of the stripping hook with respect to the core to cause the stripping hooks to strip the article of resilient material from the core.

Signed at New Haven, county of New Haven, State of Connecticut, this 11th day of October 1930.

ERNEST L. PATTEN. 

